TECHGROW - INTERVAL TIMER PROTechGrows Interval Timer Pro allows you to set very precise interval times for controlling various devices. You can choose from different interval programs: sec sec, sec min, sec hours, min sec, min min, min hours, hours hours, hours min, hours sec. With the built in daylight sensor, you can choose to operate the seconds timer only during the day or during the night. Turn the light sensor off to run the interval programme indefinitely. The extra heavy